One black-and-white drawing of Donald Duck and his nephews, probably bought by my parents at some point, likely before I was born. Professional-quality, almost certainly not on DeviantArt unless someone is being a sneak.

One crummy poster of the constellation Cancer I made in junior high for an assignment.

One colour poster of a "Kendoxy", a sword-like fairy I made up in junior high. I was lucky enough to take an art class that let me draw one. This one smiths weapons, and he's magically lifting a stone glaive in this poster. Apparently, my toddler nephew likes this poster.

I'm moving to Victoria today, though, so the answer will change very soon.

"Common" is subjective but honestly considering how much it costs and how many expenses are already being cut for space travel to be at the bare minimum cost, I doubt it would be become "common" in some senses, at least not in our lifetimes anyway.

previous question: no, but I plan to soon have a Herbie Hancock poster up b/c he's an all around badass

Space: it's much easier to send robots places than humans, so unless this planet becomes COMPLETELY uninhabitable (ie climate change or nuclear war) we probably will stay here at least another couple hundred years